As early as 2006, I used to be able to write monthly about US FDA warnings on erectile dysfunction supplements being found adulterated with prescription drugs such as sildenafil, the phosphodiesterase-5 inhibitor found in Viagra. These adulteration episodes raised the question of how many anecdotal reports of herbal products “working” had to do with them containing approved medicines.
So common was this practice that FDA created a site in 2008 that was dedicated to this problem: Hidden Risks of Erectile Dysfunction “Treatments” Sold Online. Indeed, these products were more commonly encountered from online retailers and not in health food stores. Other similar practices include bodybuilding supplement being spiked with anabolic steroids and weight loss supplements being adulterated with sibutramine (formerly Meridia), an anorectant removed from the market last year after showing increased incidence of heart attacks and stroke in patients with preexisting cardiovascular disease.
The herbal industry, led by the American Herbal Products Association (AHPA), aimed to clean up this problem and launched an initiative called, KeepSupplementsClean.org. Spurred by an FDA letter to the industry on 15 December 2010 of increased scrutiny on the adulteration problem, AHPA actually encouraged FDA to Read more »
*This blog post was originally published at Science-Based Medicine*